Explore the evolution of the card10 badge, a wrist-mounted bio-sensor enabled hackable smart device, in this 37-minute conference talk. Discover the firmware updates, new features, and improved capabilities developed over two years since its debut at the Chaos Communication Camp 2019. Learn about the enhanced Bluetooth functionality, cleaner graphics, and better sensor support. Gain insights into practical applications, such as using the badge as an indoor climate sensor connected to a Raspberry Pi. Dive into topics including the card10 Companion App, badge.team Hatchery, phypox experiments, Indoor Air Quality (IAQ) monitoring, BLE integration with Node-RED and Grafana, Micro Python API, and ECG monitoring via BLE. Get inspired to reboot your card10 badge and explore its potential as a versatile IoT device.